Vanadium pentoxide (V&sub2;O&sub5;) flakes are a hazardous material. The solid is toxic if inhaled or brought into contact with the skin, and it acts as an oxidizer, so it can intensify combustion and reacts readily with reducing agents. Packaging therefore has to prevent leakage, dust release, moisture ingress and cross-contamination throughout storage, transport and handling. The requirements below cover container selection, labelling, transport performance and storage practice.
use a chemically resistant, airtight container such as a high-density polyethylene bottle, a glass jar or a corrosion-resistant metal drum, closed with a tight-fitting lid that prevents moisture absorption and dust release.
place the primary container inside sturdy, leak-proof outer packaging such as a fiberboard drum or a plastic pail with secure sealing.
include an absorbent material such as silica gel where the product is stored long term, because V&sub2;O&sub5; hydrolyzes in the presence of moisture.
never use permeable packaging such as paper bags for solid flakes, and avoid any material that reacts with the oxide, including acids and reducing agents.
Apply the hazard statement "Danger: toxic if inhaled or in contact with skin" together with the oxidizer pictogram, following the GHS and, in the European Union, the CLP rules.
Show the UN number UN 2862 with the proper shipping name for vanadium pentoxide in the non-fused form, assigned to the toxic solids class and the appropriate packing group.
State the chemical name, the concentration and the hazard symbols clearly, and add handling warnings such as avoid inhalation, wear personal protective equipment and keep dry.
Include a safety data sheet with every shipment so that downstream handlers can classify, store and segregate the material correctly.
Use UN-certified packagings that carry a specification marking appropriate to the assigned packing group, and confirm that the packaging has passed the drop, stacking and leakproofness performance tests required for that design type.
Fit tamper-evident seals to all openings so that any intervention during transit is visible on arrival.
Apply the correct placards and markings for the mode of transport, following the applicable road, rail, sea or air dangerous goods regulations.
Keep the shipping documentation, including the safety data sheet and the transport document, consistent with the labelling on the package.
Store in a dry, cool area away from flammable materials, acids and reducing agents, and keep the containers closed when not in use.
Place bulk storage on spill trays or inside secondary containment so that any leak is captured close to the source.
Do not reuse packaging unless it has been thoroughly cleaned and inspected for damage, and destroy packaging that shows corrosion or deformation.
Train personnel in the safe handling of packaged material and require gloves, goggles and suitable respiratory protection during loading and unloading.
Follow local occupational rules such as the hazard communication requirements for chemical manufacturers and importers, and maintain the safety data sheet in the local language.
UN 2862, used for vanadium pentoxide in the non-fused form, which is classified as a toxic solid and also carries oxidizing properties.
No. Permeable packaging releases dust and admits moisture, so only chemically resistant, airtight containers inside leak-proof outer packaging are acceptable.
Vanadium pentoxide reacts with moisture to form vanadium acids, so silica gel or a similar desiccant is used to keep the headspace dry during long-term storage.
A toxic hazard statement for inhalation and skin contact, an oxidizer pictogram, the UN number and the proper shipping name, plus the chemical name and concentration, all consistent with GHS or CLP rules in the destination market.
Q: What must be checked on UN-certified drums before filling?
That the specification marking matches the assigned packing group, that drop, stacking and leakproofness tests have been passed for the design type, and that the drum is unbent and free from corrosion.
Collect spilled material in a compatible closed container with absorbent for any liquid present, keep it away from reducing agents and flammables, and dispose of it through a licensed hazardous waste route.
